Achievement Unlocked Visibility Global Unlocks
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list 		2019-07-03 12:11:33 4.4%
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before 		2019-07-03 12:11:20 5.8%
Party of Three
Find the hidden companion cube in co-op test chamber 		2019-06-26 12:04:12 3.6%
You Saved Science
Complete all test chambers in all courses of co-op 		2019-06-26 11:58:40 21.3%
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course 		2019-06-26 11:41:48 2.6%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses 		2019-06-26 11:25:34 9.1%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course 		2019-06-26 11:15:06 26.4%
Still Alive
Complete Course 4 with neither you nor your co-op partner dying 		2019-06-26 11:14:23 2.4%
Air Show
Perform 2 aerial gestures before touching the ground in co-op 		2019-06-26 10:43:28 33.9%
Gesticul-8
Perform all 8 gestures of your own volition in co-op 		2019-06-26 10:34:02 27.3%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements 		2019-06-26 10:17:25 2.7%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing 		2019-06-26 10:15:15 5.9%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course 		2019-06-26 10:01:35 32.2%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op 		2019-06-26 09:58:01 6.9%
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op 		2019-06-26 09:48:21 10.0%
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them 		2019-06-26 09:33:18 4.6%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course 		2019-06-26 09:29:06 3.6%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course 		2019-06-26 09:25:49 41.1%
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each 		2019-06-26 08:29:29 3.0%
Overclocker
Complete Test Chamber 10 in 70 seconds 		2019-06-17 00:09:49 4.0%
Team Building
Complete all test chambers in the Team Building co-op course 		2014-10-05 06:54:58 49.6%
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row 		2014-10-03 10:03:37 9.9%
High Five
Celebrate your cooperative calibration success 		2012-04-10 08:35:42 58.8%
Schrodinger's Catch
Catch a blue-painted box before it touches the ground 		2012-03-20 07:40:48 7.0%
You Made Your Point
Refuse to solve the first test in Chapter 8 		2012-03-14 08:05:08 6.8%
Door Prize
Examine all the vitrified test chamber doors 		2012-03-14 07:57:48 7.5%
Ship Overboard
Discover the missing experiment 		2012-03-14 07:57:48 11.0%
No Hard Feelings
Save a turret from redemption 		2012-03-14 07:57:48 31.9%
Pturretdactyl
Use an Aerial Faith Plate to launch a turret 		2012-03-13 08:06:47 9.1%
Pit Boss
Show that pit who's boss 		2012-03-13 07:53:11 8.0%
Smash TV
Break 11 test chamber monitors 		2012-03-13 07:37:25 3.7%
Drop Box
Place a cube on a button without touching the cube 		2012-03-09 08:11:56 29.7%
Final Transmission
Find the hidden signal in one of the Rat Man's dens 		2012-03-09 08:09:28 5.7%
Lunacy
That just happened 		2012-03-07 06:46:24 35.3%
The Part Where He Kills You
This is that part 		2012-03-06 08:17:22 35.6%
Tunnel of Funnel
Master the Excursion Funnel 		2012-03-06 07:12:55 36.4%
Dual Pit Experiment
Do the same test twice 		2012-02-28 06:59:24 38.3%
White Out
Complete the first Conversion Gel test 		2012-02-26 01:27:20 39.7%
Stranger Than Friction
Master the Propulsion Gel 		2012-02-25 06:00:33 40.8%
Portrait of a Lady
Find a hidden portrait 		2012-02-25 05:47:33 12.1%
Tater Tote
Carry science forward 		2012-02-25 05:41:48 42.5%
Vertically Unchallenged
Master the Repulsion Gel 		2012-02-25 05:16:55 44.4%
Stalemate Associate
Press the button! 		2012-02-25 02:48:12 47.2%
Scanned Alone
Stand in a defective turret detector 		2012-02-25 02:28:02 35.9%
Good Listener
Take GLaDOS' escape advice 		2012-02-25 02:04:36 29.3%
SaBOTour
Make a break for it 		2012-02-25 02:03:40 48.2%
Bridge Over Troubling Water
Complete the first Hard Light Bridge test 		2012-02-21 07:50:09 55.1%
Preservation of Mass
Break the rules in Test Chamber 07 		2012-02-21 06:59:59 25.1%
Undiscouraged
Complete the first Thermal Discouragement Beam test 		2012-02-16 07:52:11 64.6%
You Monster
Reunite with GLaDOS 		2012-02-16 07:45:33 66.7%
Wake Up Call
Survive the manual override 		2012-02-16 07:15:48 75.9%